Product Overview

The Epro PR6424/000-010+CON021 16mm Eddy Current Sensor+Eddy Current Signal Converter combines a non-contact eddy current sensor with a signal converter for rotating machinery measurement. The sensor detects changes in the distance between the probe and a conductive target, while the associated converter conditions the measurement signal for connection to machinery monitoring electronics.

This combination is suited to applications where shaft displacement, shaft position, or other movement-related parameters need to be monitored without physical contact with the rotating component. Typical equipment includes steam turbines, gas turbines, compressors, pumps, generators, and other critical rotating machinery.

Using the sensor and converter as one measurement channel simplifies the connection between the physical measurement point and the downstream monitoring system. The resulting signal can be used for machinery condition monitoring, alarm functions, and protection strategies.

Technical Specifications

Product Features

• 16 mm eddy current sensor for non-contact rotating machinery measurement.
• Includes the CON021 Eddy Current Signal Converter as part of the measurement combination.
• Suitable for shaft displacement and position monitoring.
• Non-contact measurement avoids mechanical contact with the rotating target.
• Supports connection between the sensing point and downstream machinery monitoring equipment.
• Suitable for turbines, compressors, pumps, generators, and other rotating assets.
• Useful for continuous monitoring channels in machinery protection and condition monitoring systems.

Working Principle

The PR6424/000-010 sensor detects the distance between its sensing tip and a conductive target through the eddy current principle. When the monitored shaft moves, the distance between the sensor and target changes, producing a corresponding change in the electrical sensing signal.

The CON021 signal converter receives the sensor signal and conditions it for use by the connected monitoring electronics. This allows the physical movement detected at the shaft to become a usable measurement within the machinery monitoring system.

A typical signal path is:

Rotating Shaft → PR6424/000-010 Sensor → CON021 Signal Converter → Machinery Monitoring System → Alarm / Protection

The installation position of the probe and the condition of the complete signal path directly affect measurement quality.

Role in a Rotating Machinery Control Architecture

Industrial Applications

Installation and Maintenance

1. Install the PR6424/000-010 sensor so that the probe faces the intended conductive target.
2. Maintain the appropriate probe-to-target relationship for the measurement application.
3. Secure the sensor mounting arrangement to prevent movement caused by machine vibration.
4. Install the CON021 in an appropriate location with suitable protection from mechanical damage.
5. Route sensor wiring away from strong sources of electrical interference where practical.
6. Check all connections between the sensor, converter, and monitoring system before commissioning.
7. Verify the complete measurement channel before placing the machinery into normal operation.
8. Inspect the probe tip periodically for contamination or physical damage.
9. Check the sensor mounting position if the measurement value changes unexpectedly.
10. Inspect cabling and connections when intermittent or unstable signals occur.
11. Compare unusual measurement trends with actual machinery operating conditions before replacing components.
12. After maintenance, verify the sensor, converter, and monitoring channel together before returning the equipment to service.

Related Components

Recommended Related Models

Key Advantages

• Combined eddy current sensor and signal converter configuration.
• Non-contact measurement for rotating machinery.
• 16 mm sensor head configuration.
• Suitable for shaft displacement and position monitoring.
• Supports integration with machinery monitoring and protection systems.
• Applicable to critical rotating equipment and continuous monitoring channels.

Technical FAQs

What is the function of the CON021 in the PR6424/000-010+CON021 combination?

The CON021 serves as the signal-conditioning interface for the eddy current sensor. It processes the sensor signal so that it can be used by the associated machinery monitoring electronics.

What machinery can use this sensor and converter combination?

The combination can be used in rotating equipment such as steam turbines, gas turbines, compressors, pumps, generators, gearboxes, and turboexpanders where shaft movement or displacement needs to be monitored.

Why is eddy current measurement suitable for rotating shafts?

The measurement is performed without physical contact between the sensor and conductive target. This allows shaft movement to be monitored continuously without introducing mechanical contact at the measurement point.

What should be checked if the PR6424/000-010+CON021 signal is abnormal?

Check the probe position, sensor mounting, cable connections, CON021 connections, and downstream monitoring channel. It is also important to compare the measurement with actual machinery operating conditions to determine whether the abnormal signal represents a mechanical change or an instrumentation issue.